Demo of use of errors in applications.
[openssl.git] / apps / dgst.c
index 86d60c5..d471dbd 100644 (file)
 #include <string.h>
 #include <stdlib.h>
 #include "apps.h"
-#include "bio.h"
-#include "err.h"
-#include "evp.h"
-#include "objects.h"
-#include "x509.h"
-#include "pem.h"
+#include <openssl/bio.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+#include <openssl/hmac.h>
 
 #undef BUFSIZE
 #define BUFSIZE        1024*8
 #undef PROG
 #define PROG   dgst_main
 
-#ifndef NOPROTO
-void do_fp(unsigned char *buf,BIO *f,int sep);
-#else
-void do_fp();
-#endif
+int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
+         EVP_PKEY *key, unsigned char *sigin, int siglen,
+         const char *sig_name, const char *md_name,
+         const char *file,BIO *bmd);
+
+static void list_md_fn(const EVP_MD *m,
+                       const char *from, const char *to, void *arg)
+       {
+       const char *mname;
+       /* Skip aliases */
+       if (!m)
+               return;
+       mname = OBJ_nid2ln(EVP_MD_type(m));
+       /* Skip shortnames */
+       if (strcmp(from, mname))
+               return;
+       /* Skip clones */
+       if (EVP_MD_flags(m) & EVP_MD_FLAG_PKEY_DIGEST)
+               return;
+       if (strchr(mname, ' '))
+               mname= EVP_MD_name(m);
+       BIO_printf(arg, "-%-14s to use the %s message digest algorithm\n",
+                       mname, mname);
+       }
+
+int MAIN(int, char **);
 
-int MAIN(argc,argv)
-int argc;
-char **argv;
+int MAIN(int argc, char **argv)
        {
+       ENGINE *e = NULL, *impl = NULL;
        unsigned char *buf=NULL;
-       int i,err=0;
-       EVP_MD *md=NULL,*m;
+       int i,err=1;
+       const EVP_MD *md=NULL,*m;
        BIO *in=NULL,*inp;
        BIO *bmd=NULL;
-       char *name;
-#define PROG_NAME_SIZE  16
-        char pname[PROG_NAME_SIZE];
+       BIO *out = NULL;
+#define PROG_NAME_SIZE  39
+       char pname[PROG_NAME_SIZE+1];
        int separator=0;
        int debug=0;
+       int keyform=FORMAT_PEM;
+       const char *outfile = NULL, *keyfile = NULL;
+       const char *sigfile = NULL, *randfile = NULL;
+       int out_bin = -1, want_pub = 0, do_verify = 0;
+       EVP_PKEY *sigkey = NULL;
+       unsigned char *sigbuf = NULL;
+       int siglen = 0;
+       char *passargin = NULL, *passin = NULL;
+#ifndef OPENSSL_NO_ENGINE
+       char *engine=NULL;
+       int engine_impl = 0;
+#endif
+       char *hmac_key=NULL;
+       char *mac_name=NULL;
+       int non_fips_allow = 0;
+       STACK_OF(OPENSSL_STRING) *sigopts = NULL, *macopts = NULL;
 
        apps_startup();
 
-       if ((buf=(unsigned char *)Malloc(BUFSIZE)) == NULL)
+       if ((buf=(unsigned char *)OPENSSL_malloc(BUFSIZE)) == NULL)
                {
                BIO_printf(bio_err,"out of memory\n");
                goto end;
@@ -105,20 +142,117 @@ char **argv;
                if ((bio_err=BIO_new(BIO_s_file())) != NULL)
                        BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
 
+       if (!load_config(bio_err, NULL))
+               goto end;
+
        /* first check the program name */
-        program_name(argv[0],pname,PROG_NAME_SIZE);
+       program_name(argv[0],pname,sizeof pname);
 
        md=EVP_get_digestbyname(pname);
 
        argc--;
        argv++;
-       for (i=0; i<argc; i++)
+       while (argc > 0)
                {
                if ((*argv)[0] != '-') break;
                if (strcmp(*argv,"-c") == 0)
                        separator=1;
+               else if (strcmp(*argv,"-r") == 0)
+                       separator=2;
+               else if (strcmp(*argv,"-rand") == 0)
+                       {
+                       if (--argc < 1) break;
+                       randfile=*(++argv);
+                       }
+               else if (strcmp(*argv,"-out") == 0)
+                       {
+                       if (--argc < 1) break;
+                       outfile=*(++argv);
+                       }
+               else if (strcmp(*argv,"-sign") == 0)
+                       {
+                       if (--argc < 1) break;
+                       keyfile=*(++argv);
+                       }
+               else if (!strcmp(*argv,"-passin"))
+                       {
+                       if (--argc < 1)
+                               break;
+                       passargin=*++argv;
+                       }
+               else if (strcmp(*argv,"-verify") == 0)
+                       {
+                       if (--argc < 1) break;
+                       keyfile=*(++argv);
+                       want_pub = 1;
+                       do_verify = 1;
+                       }
+               else if (strcmp(*argv,"-prverify") == 0)
+                       {
+                       if (--argc < 1) break;
+                       keyfile=*(++argv);
+                       do_verify = 1;
+                       }
+               else if (strcmp(*argv,"-signature") == 0)
+                       {
+                       if (--argc < 1) break;
+                       sigfile=*(++argv);
+                       }
+               else if (strcmp(*argv,"-keyform") == 0)
+                       {
+                       if (--argc < 1) break;
+                       keyform=str2fmt(*(++argv));
+                       }
+#ifndef OPENSSL_NO_ENGINE
+               else if (strcmp(*argv,"-engine") == 0)
+                       {
+                       if (--argc < 1) break;
+                       engine= *(++argv);
+                       e = setup_engine(bio_err, engine, 0);
+                       }
+               else if (strcmp(*argv,"-engine_impl") == 0)
+                       engine_impl = 1;
+#endif
+               else if (strcmp(*argv,"-hex") == 0)
+                       out_bin = 0;
+               else if (strcmp(*argv,"-binary") == 0)
+                       out_bin = 1;
                else if (strcmp(*argv,"-d") == 0)
                        debug=1;
+               else if (!strcmp(*argv,"-fips-fingerprint"))
+                       hmac_key = "etaonrishdlcupfm";
+               else if (strcmp(*argv,"-non-fips-allow") == 0)
+                       non_fips_allow=1;
+               else if (!strcmp(*argv,"-hmac"))
+                       {
+                       if (--argc < 1)
+                               break;
+                       hmac_key=*++argv;
+                       }
+               else if (!strcmp(*argv,"-mac"))
+                       {
+                       if (--argc < 1)
+                               break;
+                       mac_name=*++argv;
+                       }
+               else if (strcmp(*argv,"-sigopt") == 0)
+                       {
+                       if (--argc < 1)
+                               break;
+                       if (!sigopts)
+                               sigopts = sk_OPENSSL_STRING_new_null();
+                       if (!sigopts || !sk_OPENSSL_STRING_push(sigopts, *(++argv)))
+                               break;
+                       }
+               else if (strcmp(*argv,"-macopt") == 0)
+                       {
+                       if (--argc < 1)
+                               break;
+                       if (!macopts)
+                               macopts = sk_OPENSSL_STRING_new_null();
+                       if (!macopts || !sk_OPENSSL_STRING_push(macopts, *(++argv)))
+                               break;
+                       }
                else if ((m=EVP_get_digestbyname(&((*argv)[1]))) != NULL)
                        md=m;
                else
@@ -127,38 +261,57 @@ char **argv;
                argv++;
                }
 
-       if (md == NULL)
-               md=EVP_md5();
+
+       if(do_verify && !sigfile) {
+               BIO_printf(bio_err, "No signature to verify: use the -signature option\n");
+               goto end;
+       }
 
        if ((argc > 0) && (argv[0][0] == '-')) /* bad option */
                {
                BIO_printf(bio_err,"unknown option '%s'\n",*argv);
                BIO_printf(bio_err,"options are\n");
-               BIO_printf(bio_err,"-c   to output the digest with separating colons\n");
-               BIO_printf(bio_err,"-d   to output debug info\n");
-               BIO_printf(bio_err,"-%3s to use the %s message digest algorithm (default)\n",
-                       LN_md5,LN_md5);
-               BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n",
-                       LN_md2,LN_md2);
-               BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n",
-                       LN_sha1,LN_sha1);
-               BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n",
-                       LN_sha,LN_sha);
-               BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n",
-                       LN_mdc2,LN_mdc2);
-               BIO_printf(bio_err,"-%3s to use the %s message digest algorithm\n",
-                       LN_ripemd160,LN_ripemd160);
-               err=1;
+               BIO_printf(bio_err,"-c              to output the digest with separating colons\n");
+               BIO_printf(bio_err,"-r              to output the digest in coreutils format\n");
+               BIO_printf(bio_err,"-d              to output debug info\n");
+               BIO_printf(bio_err,"-hex            output as hex dump\n");
+               BIO_printf(bio_err,"-binary         output in binary form\n");
+               BIO_printf(bio_err,"-sign   file    sign digest using private key in file\n");
+               BIO_printf(bio_err,"-verify file    verify a signature using public key in file\n");
+               BIO_printf(bio_err,"-prverify file  verify a signature using private key in file\n");
+               BIO_printf(bio_err,"-keyform arg    key file format (PEM or ENGINE)\n");
+               BIO_printf(bio_err,"-out filename   output to filename rather than stdout\n");
+               BIO_printf(bio_err,"-signature file signature to verify\n");
+               BIO_printf(bio_err,"-sigopt nm:v    signature parameter\n");
+               BIO_printf(bio_err,"-hmac key       create hashed MAC with key\n");
+               BIO_printf(bio_err,"-mac algorithm  create MAC (not neccessarily HMAC)\n"); 
+               BIO_printf(bio_err,"-macopt nm:v    MAC algorithm parameters or key\n");
+#ifndef OPENSSL_NO_ENGINE
+               BIO_printf(bio_err,"-engine e       use engine e, possibly a hardware device.\n");
+#endif
+
+               EVP_MD_do_all_sorted(list_md_fn, bio_err);
                goto end;
                }
-       
+
+#ifndef OPENSSL_NO_ENGINE
+       if (engine_impl)
+               impl = e;
+#endif
+
        in=BIO_new(BIO_s_file());
        bmd=BIO_new(BIO_f_md());
        if (debug)
                {
                BIO_set_callback(in,BIO_debug_callback);
                /* needed for windows 3.1 */
-               BIO_set_callback_arg(in,bio_err);
+               BIO_set_callback_arg(in,(char *)bio_err);
+               }
+
+       if(!app_passwd(bio_err, passargin, NULL, &passin, NULL))
+               {
+               BIO_printf(bio_err, "Error getting password\n");
+               goto end;
                }
 
        if ((in == NULL) || (bmd == NULL))
@@ -167,63 +320,340 @@ char **argv;
                goto end;
                }
 
+       if(out_bin == -1) {
+               if(keyfile)
+                       out_bin = 1;
+               else
+                       out_bin = 0;
+       }
+
+       if(randfile)
+               app_RAND_load_file(randfile, bio_err, 0);
+
+       if(outfile) {
+               if(out_bin)
+                       out = BIO_new_file(outfile, "wb");
+               else    out = BIO_new_file(outfile, "w");
+       } else {
+               out = BIO_new_fp(stdout, BIO_NOCLOSE);
+#ifdef OPENSSL_SYS_VMS
+               {
+               BIO *tmpbio = BIO_new(BIO_f_linebuffer());
+               out = BIO_push(tmpbio, out);
+               }
+#endif
+       }
+
+       if(!out) {
+               BIO_printf(bio_err, "Error opening output file %s\n", 
+                                       outfile ? outfile : "(stdout)");
+               ERR_print_errors(bio_err);
+               goto end;
+       }
+       if ((!!mac_name + !!keyfile + !!hmac_key) > 1)
+               {
+               BIO_printf(bio_err, "MAC and Signing key cannot both be specified\n");
+               goto end;
+               }
+
+       if(keyfile)
+               {
+               if (want_pub)
+                       sigkey = load_pubkey(bio_err, keyfile, keyform, 0, NULL,
+                               e, "key file");
+               else
+                       sigkey = load_key(bio_err, keyfile, keyform, 0, passin,
+                               e, "key file");
+               if (!sigkey)
+                       {
+                       /* load_[pub]key() has already printed an appropriate
+                          message */
+                       goto end;
+                       }
+               }
+
+       if (mac_name)
+               {
+               EVP_PKEY_CTX *mac_ctx = NULL;
+               int r = 0;
+               if (!init_gen_str(bio_err, &mac_ctx, mac_name, impl, 0))
+                       goto mac_end;
+               if (macopts)
+                       {
+                       char *macopt;
+                       for (i = 0; i < sk_OPENSSL_STRING_num(macopts); i++)
+                               {
+                               macopt = sk_OPENSSL_STRING_value(macopts, i);
+                               if (pkey_ctrl_string(mac_ctx, macopt) <= 0)
+                                       {
+                                       BIO_printf(bio_err,
+                                               "MAC parameter error \"%s\"\n",
+                                               macopt);
+                                       ERR_print_errors(bio_err);
+                                       goto mac_end;
+                                       }
+                               }
+                       }
+               if (EVP_PKEY_keygen(mac_ctx, &sigkey) <= 0)
+                       {
+                       BIO_puts(bio_err, "Error generating key\n");
+                       ERR_print_errors(bio_err);
+                       goto mac_end;
+                       }
+               r = 1;
+               mac_end:
+               if (mac_ctx)
+                       EVP_PKEY_CTX_free(mac_ctx);
+               if (r == 0)
+                       goto end;
+               }
+
+       if (non_fips_allow)
+               {
+               EVP_MD_CTX *md_ctx;
+               BIO_get_md_ctx(bmd,&md_ctx);
+               EVP_MD_CTX_set_flags(md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+               }
+
+       if (hmac_key)
+               {
+               sigkey = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, impl,
+                                       (unsigned char *)hmac_key, -1);
+               if (!sigkey)
+                       goto end;
+               }
+
+       if (sigkey)
+               {
+               EVP_MD_CTX *mctx = NULL;
+               EVP_PKEY_CTX *pctx = NULL;
+               int r;
+               if (!BIO_get_md_ctx(bmd, &mctx))
+                       {
+                       BIO_printf(bio_err, "Error getting context\n");
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               if (do_verify)
+                       r = EVP_DigestVerifyInit(mctx, &pctx, md, impl, sigkey);
+               else
+                       r = EVP_DigestSignInit(mctx, &pctx, md, impl, sigkey);
+               if (!r)
+                       {
+                       BIO_printf(bio_err, "Error setting context\n");
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               if (sigopts)
+                       {
+                       char *sigopt;
+                       for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++)
+                               {
+                               sigopt = sk_OPENSSL_STRING_value(sigopts, i);
+                               if (pkey_ctrl_string(pctx, sigopt) <= 0)
+                                       {
+                                       BIO_printf(bio_err,
+                                               "parameter error \"%s\"\n",
+                                               sigopt);
+                                       ERR_print_errors(bio_err);
+                                       goto end;
+                                       }
+                               }
+                       }
+               }
        /* we use md as a filter, reading from 'in' */
-       BIO_set_md(bmd,md);
+       else
+               {
+               EVP_MD_CTX *mctx = NULL;
+               if (!BIO_get_md_ctx(bmd, &mctx))
+                       {
+                       BIO_printf(bio_err, "Error getting context\n");
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               if (md == NULL)
+                       md = EVP_md5(); 
+               if (!EVP_DigestInit_ex(mctx, md, impl))
+                       {
+                       BIO_printf(bio_err, "Error setting digest %s\n", pname);
+                       ERR_print_errors(bio_err);
+                       goto end;
+                       }
+               }
+
+       if(sigfile && sigkey) {
+               BIO *sigbio;
+               sigbio = BIO_new_file(sigfile, "rb");
+               siglen = EVP_PKEY_size(sigkey);
+               sigbuf = OPENSSL_malloc(siglen);
+               if(!sigbio) {
+                       BIO_printf(bio_err, "Error opening signature file %s\n",
+                                                               sigfile);
+                       ERR_print_errors(bio_err);
+                       goto end;
+               }
+               siglen = BIO_read(sigbio, sigbuf, siglen);
+               BIO_free(sigbio);
+               if(siglen <= 0) {
+                       BIO_printf(bio_err, "Error reading signature file %s\n",
+                                                               sigfile);
+                       ERR_print_errors(bio_err);
+                       goto end;
+               }
+       }
        inp=BIO_push(bmd,in);
 
+       if (md == NULL)
+               {
+               EVP_MD_CTX *tctx;
+               BIO_get_md_ctx(bmd, &tctx);
+               md = EVP_MD_CTX_md(tctx);
+               }
+
        if (argc == 0)
                {
                BIO_set_fp(in,stdin,BIO_NOCLOSE);
-               do_fp(buf,inp,separator);
+               err=do_fp(out, buf,inp,separator, out_bin, sigkey, sigbuf,
+                         siglen,NULL,NULL,"stdin",bmd);
                }
        else
                {
-               name=OBJ_nid2sn(md->type);
+               const char *md_name = NULL, *sig_name = NULL;
+               if(!out_bin)
+                       {
+                       if (sigkey)
+                               {
+                               const EVP_PKEY_ASN1_METHOD *ameth;
+                               ameth = EVP_PKEY_get0_asn1(sigkey);
+                               if (ameth)
+                                       EVP_PKEY_asn1_get0_info(NULL, NULL,
+                                               NULL, NULL, &sig_name, ameth);
+                               }
+                       md_name = EVP_MD_name(md);
+                       }
+               err = 0;
                for (i=0; i<argc; i++)
                        {
+                       int r;
                        if (BIO_read_filename(in,argv[i]) <= 0)
                                {
                                perror(argv[i]);
                                err++;
                                continue;
                                }
-                       printf("%s(%s)= ",name,argv[i]);
-                       do_fp(buf,inp,separator);
-                       BIO_reset(bmd);
+                       else
+                       r=do_fp(out,buf,inp,separator,out_bin,sigkey,sigbuf,
+                               siglen,sig_name,md_name, argv[i],bmd);
+                       if(r)
+                           err=r;
+                       (void)BIO_reset(bmd);
                        }
                }
 end:
        if (buf != NULL)
                {
-               memset(buf,0,BUFSIZE);
-               Free(buf);
+               OPENSSL_cleanse(buf,BUFSIZE);
+               OPENSSL_free(buf);
                }
        if (in != NULL) BIO_free(in);
+       if (passin)
+               OPENSSL_free(passin);
+       BIO_free_all(out);
+       EVP_PKEY_free(sigkey);
+       if (sigopts)
+               sk_OPENSSL_STRING_free(sigopts);
+       if (macopts)
+               sk_OPENSSL_STRING_free(macopts);
+       if(sigbuf) OPENSSL_free(sigbuf);
        if (bmd != NULL) BIO_free(bmd);
-       EXIT(err);
+       apps_shutdown();
+       OPENSSL_EXIT(err);
        }
 
-void do_fp(buf,bp,sep)
-unsigned char *buf;
-BIO *bp;
-int sep;
+int do_fp(BIO *out, unsigned char *buf, BIO *bp, int sep, int binout,
+         EVP_PKEY *key, unsigned char *sigin, int siglen,
+         const char *sig_name, const char *md_name,
+         const char *file,BIO *bmd)
        {
-       int len;
+       size_t len;
        int i;
 
        for (;;)
                {
                i=BIO_read(bp,(char *)buf,BUFSIZE);
-               if (i <= 0) break;
+               if(i < 0)
+                       {
+                       BIO_printf(bio_err, "Read Error in %s\n",file);
+                       ERR_print_errors(bio_err);
+                       return 1;
+                       }
+               if (i == 0) break;
+               }
+       if(sigin)
+               {
+               EVP_MD_CTX *ctx;
+               BIO_get_md_ctx(bp, &ctx);
+               i = EVP_DigestVerifyFinal(ctx, sigin, (unsigned int)siglen); 
+               if(i > 0)
+                       BIO_printf(out, "Verified OK\n");
+               else if(i == 0)
+                       {
+                       BIO_printf(out, "Verification Failure\n");
+                       return 1;
+                       }
+               else
+                       {
+                       BIO_printf(bio_err, "Error Verifying Data\n");
+                       ERR_print_errors(bio_err);
+                       return 1;
+                       }
+               return 0;
+               }
+       if(key)
+               {
+               EVP_MD_CTX *ctx;
+               BIO_get_md_ctx(bp, &ctx);
+               len = BUFSIZE;
+               if(!EVP_DigestSignFinal(ctx, buf, &len)) 
+                       {
+                       BIO_printf(bio_err, "Error Signing Data\n");
+                       ERR_print_errors(bio_err);
+                       return 1;
+                       }
+               }
+       else
+               {
+               len=BIO_gets(bp,(char *)buf,BUFSIZE);
+               if ((int)len <0)
+                       {
+                       ERR_print_errors(bio_err);
+                       return 1;
+                       }
                }
-       len=BIO_gets(bp,(char *)buf,BUFSIZE);
 
-       for (i=0; i<len; i++)
+       if(binout) BIO_write(out, buf, len);
+       else if (sep == 2)
+               {
+               for (i=0; i<(int)len; i++)
+                       BIO_printf(out, "%02x",buf[i]);
+               BIO_printf(out, " *%s\n", file);
+               }
+       else 
                {
-               if (sep && (i != 0))
-                       putc(':',stdout);
-               printf("%02x",buf[i]);
+               if (sig_name)
+                       BIO_printf(out, "%s-%s(%s)= ", sig_name, md_name, file);
+               else if (md_name)
+                       BIO_printf(out, "%s(%s)= ", md_name, file);
+               else
+                       BIO_printf(out, "(%s)= ", file);
+               for (i=0; i<(int)len; i++)
+                       {
+                       if (sep && (i != 0))
+                               BIO_printf(out, ":");
+                       BIO_printf(out, "%02x",buf[i]);
+                       }
+               BIO_printf(out, "\n");
                }
-       printf("\n");
+       return 0;
        }